CVE-2026-98174

high

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix rlist race and missing initialization TCP_Server_Info.rlist is allocated via kzalloc which zeros both ->next and ->prev to NULL instead of pointing to itself, making list_empty() always return false and list_add() dereference a NULL ->prev pointer. Also, cifs_signal_cifsd_for_reconnect() can be called concurrently from multiple cifsd threads, allowing the same server's rlist node to be added twice into the local list, corrupting it.

References

https://git.kernel.org/stable/c/c037d6bde3dd5fa00b017b6b98a5389ec0ebc02f

https://git.kernel.org/stable/c/b5f924ffbfa976e4b97f17e8132c595b97482c2d

https://git.kernel.org/stable/c/5f270f091256da1338c3631083e15d7f83cc05e1

https://git.kernel.org/stable/c/5a8f82f9c5839389cf4036029dd75a9911049e83

https://git.kernel.org/stable/c/04082b1833856cb9ed87e0d3d5f04cbf836cf7da

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-93102

Details

Source: Mitre, NVD

Published: 2026-10-06

Updated: 2026-10-07

Risk Information

CVSS v2

Base Score: 7.6

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00175